What’s Vulnerable › Vulnerabilities

CVE-2021-25977: Piranha CMS - Stored XSS in Page Title

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-25 · updated 2026-06-17
• Weakness: CWE-79

Description

In PiranhaCMS, versions 7.0.0 to 9.1.1 are vulnerable to stored XSS due to the page title improperly sanitized. By creating a page with a specially crafted page title, a low privileged user can trigger arbitrary JavaScript execution.

Affected products

• PiranhaCMS Piranha: from 7.0.0 through 9.1.1

References

• https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7
• https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25977
• https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7
• https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25977

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